SEGA Superstars Tennis features classic SEGA characters - including Sonic the Hedgehog and Ulala from Space Channel 5 - plus some of the most unusual courts and outrageous settings ever imagined in a rousing match of tennis. Developed by Sumo Digital , this title features a total of 15 playable characters, each with their own unique tennis skills. Courts are SEGA-themed too, with Green Hill Zone and Samba de Amigo's Carnival Park.